Improvement in machines for pointing the extremities of horseshoe-nails



H. A..WILLS Improvement in Machines for Pointing the Extremities ofHorseshoe-Nails.

Patented July 16, 1872.

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UNITED STATES PATENT OFFICE.

HARRY A. WILLS, OF VERGENN ES, ASSIGNOR TO JULIA A. WILLS, OF SAMEPLACE, ANDLUOY S. KIN GSLAND, OF BURLINGTON, VERMONT.

IMPROVEMENT IN MACHINES FOR POINTING THE EXTREMlTIES 0F HORSESHOE-NAILS.

Specification fo'rming part of Letters Patent No. 129,077, dated July16, 1872.

Specification describing anew and useful Improvement in Horseshoe-NailMachinery, invented by HARRY A. WILLS, of Vergennes, in the county ofAddison and State of Vermont.

This invention relates to machinery for manufacturing horseshoe-nails,and in improvements in a machine for shearing or tapering the point ofthe nail, many features of which machine are already secured to me byLetters Patent of the United States. The present invention consists in asliding finger for filling the die, so as to form a smooth and levelsurface for the nail to slide on when it is pushed over the die forclipping, the finger being withdrawn when the nail reaches its position.

In the accompanying drawing, Figure 1 represents a horizontal sectionalview of the machine taken on the line .22 m of Fig. 2. Fig. 2

is a vertical section of Fig. 1 taken on the line g3 Fig. 3 shows thenail before, and Fig. 4 shows it after, passing through the machine.

Similar letters of reference indicate corresponding parts.

A is the bed-plate of the machine, elevated to a convenient height onthe legs B. The die 0 rests upon this bed. D is an aperture through thebed beneath the die, through which the nails are discharged after theyare tapered or clipped. E is the feeding-screw, in contact with whichthe nails are fed and carried along to the die. At the end of thescrew-thread the nails are turned at right angles with the screw by amechanism described in my former patent, and are shoved in under thescrew and on to the die by the pusher K. This pusher works horizontallyagainst the head of the nail, and is actuated by means of a cam on thedriving-shaft G. H is the finger, which is actuated in the samemanner,.and preceding the pusher in its motion. This finger fills up thedie and makes an even surface for the nail to slide upon, and that isits only object. Without this finger for filling the die the nails areliable to catch or tip, so that the operation of shearing is imperfectlyperformed, and it is this feature of the machine which I claim as novel,the machine otherwise being in common use, with the exception of thewiper. The reciprocatin g mechanism for operating the finger H is markedI. The slide to which the finger is attached is directly beneath that ofthe pusher, both being seen in dotted lines in the drawing, and marked,respectively, J and K. They are nearly identical in form, and both aresupported by upright bars from a frame above thedriving-shaft G, andoperated by cams L M on that shaft. N represents the plunger, by whichthe nail is forced down through the die. This plunger is connected witha vertical slide, 0, at the end of the machine, which receives avertical movement by means of a crank-pin in the end of thedriving-shaft and the connecting-bar P.

The working parts of the machine are arranged and timed to work inrotation. First, the finger H slides forward and fills the die, makingan even surface over which the nail is forced by the pusher K. Then thefinger is withdrawn and the plunger N strikes it, cutting a piece ofmetal from each side as it forces the nail through the die. R is thewiper for keeping the die clear of scraps. It consists of a bar pivotedat its center to the bed, with one end resting on the die. S is anupright lever, pivoted to the frame of the machine at T, with its lowerend in contact with the outer end of the wiper. At each revolution ofthe driving-shaft and directly after the cut is made, a cam on the shaftstrikes the upper end of the lever S, which imparts motion to the wiper,giving it a revolving motion, and causing its inner end to sweep overthe die and clear it of the scraps cut from the nail. The back motion ofthe wiper is produced by a spring, U, attached to the wiper and to thebed-plate. V is a bow spring on the lower end of the plunger-slide, therecoil of which accelerates the raising of the plunger after the cut ismade, and also clears the plunger of the scraps cut off.

I do not limit myself to the precise form or arrangement of the partsclaimed, as variations may be made without departing from my invention.

Having thus described inyinvention, I claim as new and desire to secureby Letters Patexit- The sliding finger H, arranged to enter die,

form a smooth level surface for the nail, and

withdraw therefrom as soon as the nail has reached the position in whichit remains while being out, as described.

HARRY A. WILLS.

Witnesses:

J. G. DEAN, E. L. TAYLOR.

